KVH Industries TracPhone F55 Installation Manual page 33

3.3.2 ADU damage
The minimum acceptable separation (d min.) between a radar and the ADU is
determined by the radar wavelength/frequency and the power emitted by the
radar. The tables below show some "rule of thumb" minimum separation
distances as a function of radar power at X and S band. If the "d min."
separation listed below is applied, ADU damage will normally be avoided.
"d min." is defined as the shortest distance between the radar antenna (in any
position) and the surface of the Fleet ADU.
Radar power
0 – 10 kW
30 kW
50 kW
Radar power
0 – 10 kW
30 kW
50 kW
The separation distance for C-band (4-8 GHz) radars should generally be the
same as for X-band radars.
X-band (~ 3 cm / 10 GHz) damage distance
d min. at 15° vertical
separation
0.8 m
2.4 m
4.0 m
S-band (~ 10 cm / 3 GHz) damage distance
d min. at 15° vertical
separation
0.4 m
1.0 m
2.0 m
Interference
Chapter 3: Placing the Antenna
d min. at 60° vertical
separation
0.4 m
1.2 m
2.0 m
d min. at 60° vertical
separation
0.2 m
0.5 m
1.0 m
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